US20040060926A1 - Electric heating device comprising a coated heat conductor - Google Patents

Electric heating device comprising a coated heat conductor Download PDF

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Publication number
US20040060926A1
US20040060926A1 US10416651 US41665103A US20040060926A1 US 20040060926 A1 US20040060926 A1 US 20040060926A1 US 10416651 US10416651 US 10416651 US 41665103 A US41665103 A US 41665103A US 20040060926 A1 US20040060926 A1 US 20040060926A1
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US
Grant status
Application
Patent type
Prior art keywords
heating
conductor
means
interlayer
insulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10416651
Inventor
Michael Weiss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WET Automotive Systems AG
Original Assignee
WET Automotive Systems AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B3/00Ohmic-resistance heating
    • H05B3/40Heating elements having the shape of rods or tubes
    • H05B3/54Heating elements having the shape of rods or tubes flexible
    • H05B3/56Heating cables

Abstract

The present invention relates to an electric heating means (1) having an electric heating conductor (2) covered by an insulating layer (4).
Provision is made so that between the heating conductor (2) and the insulating layer (4), an electrically conductive interlayer (3) is arranged.

Description

  • [0001]
    The present invention relates to a heating means according to the generic clause of claim 1. Generic heating means are used, for example, for electric heating of furniture, vehicle seats or external systems.
  • PRIOR ART
  • [0002]
    It is known that generic heating means may be installed, for example, under a seat covering of a vehicle seat. Thus, electric heating strands are placed in the seating surface and covered with a covering. To secure the covering against slippage, the covering is connected by seams arranged at regular intervals, for example, to a padding of the seat.
  • [0003]
    Here the problem arises that heating strands must be oversewn. Thus, damage to the heating strand by needles of a sewing machine is possible. In an extreme case, severance of the strand may result. This leads to total failure of the heating means. In such case, the seat must be repaired at considerable expense or completely scrapped.
  • [0004]
    It is known further that heating strands may be jacketed with an insulating layer. However, this insulating layer must be flexible. Therefore, the insulating layer can only inadequately protect a heating strand from damage by sewing needles.
  • OBJECT OF THE INVENTION
  • [0005]
    The invention relates to a heating means having the features of claim 1. It has the advantage that the interlayer 3, in event of damage to the heating conductor 2, may serve as a current by-pass. In this way, a flow of current through the heating means 1 is assured even in case of damage to the heating conductor 2.
  • [0006]
    The heating means according to claim 2 will withstand high mechanical overloading.
  • [0007]
    The heating means according to claim 3 comprises a flexible and electrically conductive interlayer, capable also of being brought into close contact with the surface of the heating strand. As a result, transfer resistances are low.
  • [0008]
    A heating means according to claim 4 is of a simple and corrosion-protected structure.
  • [0009]
    A heating means according to claim 5 ensures that in event of failure of the heating conductor 2, the interlayer 3 will not be endangered by an undue current load.
  • [0010]
    A heating means according to claim 6 permits a simple and wide-area placement of heating conductors.
  • FIGUR S
  • [0011]
    The description to follow deals with possible conformations of the invention. These embodiments are to be understood as examples only, and are executed with reference to:
  • [0012]
    [0012]FIG. 1 Cross section of a heating conductor according to the invention;
  • [0013]
    [0013]FIG. 2 Cross section of a flat strip cable with heating conductors according to the invention.
  • DESCRIPTION OF THE INVENTION
  • [0014]
    [0014]FIG. 1 shows a heating means 1. This possesses an electric heating conductor 2. The heating conductor 2 is surrounded by an electrically conductive interlayer 3. The electric heating conductor 2 with its interlayer 3 is surrounded by an insulating layer 4.
  • [0015]
    The electric heating conductor 2 is preferably a metallic conductor. Owing to the relief of the heating conductor 2 by the interlayer 3, the heating conductor of the present invention may have less mechanical load capacity than in conventional solutions. Thus, for example, instead of a costly precious-metal strand, a more economical copper strand may be used.
  • [0016]
    The interlayer 3 consists preferably of a synthetic material. This may itself be electrically conductive. Alternatively, however, electrically conductive particles, for example of graphite or metal, may be mixed in. Instead of a coating with synthetic material, an application of powdered graphite would also be conceivable. This would then be present loose between the heating conductor 2 and the interlayer 3.
  • [0017]
    The insulating layer 4 may be a conventional synthetic insulation. In the present example, it is a halogen-free synthetic material.
  • [0018]
    When the heating means 1 is switched on, the heating conductor 2 is supplied with current. As a result of its electrical resistance, the heating conductor 2 will be heated. In undamaged condition, very little current will flow through the interlayer 3. This is ensured by a higher specific resistance of the interlayer 3 than of the heating conductor 2.
  • [0019]
    If damage to the heating conductor 2 results in a weakening of its conductor cross-section, then its electrical resistance will increase at this point. As a result, the current will escape locally into the surrounding interlayer 3. After bypassing the damaged part of the heating conductor 2 by way of the interlayer 3, the current will continue to flow in its original direction in the heating conductor 2 once more.
  • [0020]
    [0020]FIG. 2 shows a flat strip cable having three heating conductors 2, 2′, 2″. Each of these is surrounded by an interlayer 3, 3′, 3″ of its own. The heating conductors 2, 2′, 2″ run parallel to each other at regular intervals. They are covered on their under side by an insulating layer 4 and on top by an insulating layer 4′. The insulating layers 4, 4′ are connected to each other on either side of a heating conductor 2, 2′, 2″. They thus form the outer layer of a flat strip cable.

Claims (6)

  1. 1. Electric heating means (1) having an electric heating conductor (2) covered at least partly by an insulating layer (4), characterized in that between the heating conductor (2) and the insulating layer (4), an electrically conductive interlayer (3) is arranged.
  2. 2. Heating means according to claim 1, characterized in that the electric conductor (2) is a metallic strand.
  3. 3. Heating means according to either of the preceding claims, characterized in that the interlayer is at least partly of a synthetic material and/or of graphite and/or of electrically conductive particles of material.
  4. 4. Heating means according to any of the preceding claims, characterized in that the heating conductor (2) is of wire or strip form, and the interlayer (3) jackets the electric heating conductor (2) substantially all over.
  5. 5. Heating means according to any of the preceding claims, characterized in that the cross section of the interlayer (3) comprises an at least similar current-carrying capacity in the direction of flow to the electric heating conductor (2).
  6. 6. Heating means according to any of the preceding claims, characterized in that at least two heating conductors (2, 2′, 2″) are at least partly covered, each by its own interlayer (3, 3′, 3″), and each of these interlayers (3, 3′, 3″) is at least in part covered in turn by at least one insulating layer (4, 4′).
US10416651 2001-09-14 2002-08-30 Electric heating device comprising a coated heat conductor Abandoned US20040060926A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE10145425.2 2001-09-14
DE10145425 2001-09-14
DE2002100036 DE10200036B4 (en) 2001-09-14 2002-01-03 An electric heater with a heating conductor coated
DE10200036.0 2002-01-03
PCT/DE2002/003186 WO2003026352A3 (en) 2001-09-14 2002-08-30 Electric heating device comprising a coated heat conductor

Publications (1)

Publication Number Publication Date
US20040060926A1 true true US20040060926A1 (en) 2004-04-01

Family

ID=26010146

Family Applications (1)

Application Number Title Priority Date Filing Date
US10416651 Abandoned US20040060926A1 (en) 2001-09-14 2002-08-30 Electric heating device comprising a coated heat conductor

Country Status (4)

Country Link
US (1) US20040060926A1 (en)
JP (1) JP3826136B2 (en)
CN (1) CN1328928C (en)
WO (1) WO2003026352A3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060011598A1 (en) * 2004-07-16 2006-01-19 Koito Manufacturing Co., Ltd. Vehicular lamp
US20100044075A1 (en) * 2007-02-28 2010-02-25 Michael Weiss Electric conductor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012025156A1 (en) * 2012-12-21 2014-06-26 W.E.T. Automotive Systems Ag Electrical heating device for heating e.g. seat of passenger car, has contacting device, and core strand partially covered by coating, where coating is formed as conducting casing that electrically connects core strand with heating resistor
CN104254151A (en) * 2014-08-25 2014-12-31 常熟市董浜镇华进电器厂 Safe and reliable electric heating tube
JP2016219222A (en) * 2015-05-19 2016-12-22 株式会社都ローラー工業 Linear heater and the planar heater

Citations (25)

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US983108A (en) * 1910-05-03 1911-01-31 Joseph K Allshouse Nose-bag.
US1057385A (en) * 1912-07-05 1913-03-25 Elmer E Stevens Clothes-pin bag.
US2585443A (en) * 1949-03-15 1952-02-12 Duncan B Cox Electric heating unit
US3267830A (en) * 1964-06-22 1966-08-23 William H Van Gaasbeek Dry box apparatus
US3323846A (en) * 1965-03-25 1967-06-06 Lawrence O Boddy Dry box glove retaining means
US3858418A (en) * 1972-12-19 1975-01-07 Larry L Butler Sanitary diaper handling apparatus
US3859506A (en) * 1973-06-15 1975-01-07 Sola Basic Ind Inc Constant wattage heating element
US3907389A (en) * 1973-12-12 1975-09-23 Marion E Cox Glove box chamber
US4089571A (en) * 1976-04-08 1978-05-16 Landy Jerome J Glove port and insert
US4123123A (en) * 1975-03-28 1978-10-31 Kubushiki Kaisha Kokugo Method and apparatus for fixing glove to glove box and glove suitable therefor
US4256945A (en) * 1979-08-31 1981-03-17 Iris Associates Alternating current electrically resistive heating element having intrinsic temperature control
US4309596A (en) * 1980-06-24 1982-01-05 Sunbeam Corporation Flexible self-limiting heating cable
US4348584A (en) * 1979-05-10 1982-09-07 Sunbeam Corporation Flexible heating elements and processes for the production thereof
US4697064A (en) * 1985-02-19 1987-09-29 I.G. Bauerhin GmbH Electro-Technische Fabrik Method and apparatus for heating seats electrically
US4928440A (en) * 1987-03-30 1990-05-29 Container Products Corp. Decontamination booth
US4952776A (en) * 1988-07-01 1990-08-28 Automobiles Peugeot Seat heating device in particular for an automotive vehicle
US5163645A (en) * 1991-08-19 1992-11-17 Steve Caruso Bag holder
US5299243A (en) * 1991-12-24 1994-03-29 Cogema-Compagnie Generale Des Matieres Nucleaires Glove holder unit for a confinement enclosure
US5316733A (en) * 1992-04-15 1994-05-31 Piper Plastics, Inc. Clean box with sliding arms
US5320145A (en) * 1993-04-26 1994-06-14 Avino Alan J Apparatus for draining containers and the like
US5642527A (en) * 1996-02-09 1997-07-01 Savage; Craig P. Glove sander
US5734992A (en) * 1997-01-28 1998-04-07 Ross; Michael R. Protective hand and arm covering article
US5862521A (en) * 1994-10-14 1999-01-26 Van Marwijk; Johannes Adrianus Augstinus Glove for protecting the hand against cuts
US6147332A (en) * 1996-07-12 2000-11-14 Kongsberg Automotive Ab Arrangement and method for manufacturing of a heatable seat
US6489595B1 (en) * 2001-03-12 2002-12-03 Check Corporation Electric heater for a seat assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607154A (en) * 1983-09-26 1986-08-19 Fieldcrest Mills, Inc. Electrical heating apparatus protected against an overheating condition and a temperature sensitive electrical sensor for use therewith
US6111234A (en) * 1991-05-07 2000-08-29 Batliwalla; Neville S. Electrical device
WO1999044391A1 (en) * 1998-02-27 1999-09-02 Idemitsu Kosan Co., Ltd. Heating unit

Patent Citations (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US983108A (en) * 1910-05-03 1911-01-31 Joseph K Allshouse Nose-bag.
US1057385A (en) * 1912-07-05 1913-03-25 Elmer E Stevens Clothes-pin bag.
US2585443A (en) * 1949-03-15 1952-02-12 Duncan B Cox Electric heating unit
US3267830A (en) * 1964-06-22 1966-08-23 William H Van Gaasbeek Dry box apparatus
US3323846A (en) * 1965-03-25 1967-06-06 Lawrence O Boddy Dry box glove retaining means
US3858418A (en) * 1972-12-19 1975-01-07 Larry L Butler Sanitary diaper handling apparatus
US3859506A (en) * 1973-06-15 1975-01-07 Sola Basic Ind Inc Constant wattage heating element
US3907389A (en) * 1973-12-12 1975-09-23 Marion E Cox Glove box chamber
US4123123A (en) * 1975-03-28 1978-10-31 Kubushiki Kaisha Kokugo Method and apparatus for fixing glove to glove box and glove suitable therefor
US4089571A (en) * 1976-04-08 1978-05-16 Landy Jerome J Glove port and insert
US4348584A (en) * 1979-05-10 1982-09-07 Sunbeam Corporation Flexible heating elements and processes for the production thereof
US4256945A (en) * 1979-08-31 1981-03-17 Iris Associates Alternating current electrically resistive heating element having intrinsic temperature control
US4309596A (en) * 1980-06-24 1982-01-05 Sunbeam Corporation Flexible self-limiting heating cable
US4697064A (en) * 1985-02-19 1987-09-29 I.G. Bauerhin GmbH Electro-Technische Fabrik Method and apparatus for heating seats electrically
US4928440A (en) * 1987-03-30 1990-05-29 Container Products Corp. Decontamination booth
US4952776A (en) * 1988-07-01 1990-08-28 Automobiles Peugeot Seat heating device in particular for an automotive vehicle
US5163645A (en) * 1991-08-19 1992-11-17 Steve Caruso Bag holder
US5299243A (en) * 1991-12-24 1994-03-29 Cogema-Compagnie Generale Des Matieres Nucleaires Glove holder unit for a confinement enclosure
US5316733A (en) * 1992-04-15 1994-05-31 Piper Plastics, Inc. Clean box with sliding arms
US5320145A (en) * 1993-04-26 1994-06-14 Avino Alan J Apparatus for draining containers and the like
US5862521A (en) * 1994-10-14 1999-01-26 Van Marwijk; Johannes Adrianus Augstinus Glove for protecting the hand against cuts
US5642527A (en) * 1996-02-09 1997-07-01 Savage; Craig P. Glove sander
US6147332A (en) * 1996-07-12 2000-11-14 Kongsberg Automotive Ab Arrangement and method for manufacturing of a heatable seat
US5734992A (en) * 1997-01-28 1998-04-07 Ross; Michael R. Protective hand and arm covering article
US6489595B1 (en) * 2001-03-12 2002-12-03 Check Corporation Electric heater for a seat assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060011598A1 (en) * 2004-07-16 2006-01-19 Koito Manufacturing Co., Ltd. Vehicular lamp
US20100044075A1 (en) * 2007-02-28 2010-02-25 Michael Weiss Electric conductor
US8723043B2 (en) * 2007-02-28 2014-05-13 W.E.T. Automotive Systems Ag Electric conductor

Also Published As

Publication number Publication date Type
WO2003026352A3 (en) 2003-08-28 application
JP3826136B2 (en) 2006-09-27 grant
CN1488233A (en) 2004-04-07 application
CN1328928C (en) 2007-07-25 grant
JP2004522291A (en) 2004-07-22 application
WO2003026352A2 (en) 2003-03-27 application

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Legal Events

Date Code Title Description
AS Assignment

Owner name: W.E.T. AUTOMOTIVE SYSTEMS AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WEISS, MICHAEL;REEL/FRAME:014713/0830

Effective date: 20030528